Method and apparatus for transmitting/receiving, encoded data as burst signals using a number of antennas

• US 5,787,122 A
• Filed: 04/30/1996
• Issued: 07/28/1998
• Est. Priority Date: 05/24/1995
• Status: Expired due to Term

• Current Assignee: Sony Corporation (Sony Group Corp.)
• Original Assignee: Sony Corporation (Sony Group Corp.)
• Inventors: Suzuki, Mitsuhiro
• Primary Examiner(s): Vo, Don N.
• Assistant Examiner(s): Le, Amanda T.
• Application Number:
  US08/640,059
• Time in Patent Office: 819 Days
• Field of Search: 375/200, 375/203, 375/205, 375/267, 375/299, 375/347, 455/19, 455/78, 455/82, 455/101, 455/133, 455/272, 455/277.1, 370/278, 370/282, 370/321, 370/334, 370/337, 370/339, 370/347
• US Class Current: 375/267
• CPC Class Codes: H04B 7/0606 Random or pseudo-random switching scheme
• CPC Class Codes: H04B 7/0671 using different delays between antennas
• CPC Class Codes: H04B 7/0822 according to predefined selection scheme
• CPC Class Codes: H04B 7/0828 with delay elements in antenna paths
• CPC Class Codes: H04B 7/0894 using different delays between antennas

Abstract

A simplified transmission-system and reception-system including a radio transmitter and radio receiver. A radio transmitter includes an encoding portion (22) for generating an encoded bit signal from transmission bit data, an interleave means (23) for interleaving an encoded output over a plurality of burst signals, a modulator (24) for modulating interleaved burst signals, and an antenna switcher (26) for switching modulated signals for each of the burst signals, and transmitting a switched modulated signal from a plurality of antennas (27a) (27n). A radio receiver includes a switch (72) for sequentially selecting reception signals received at a plurality of antennas (71a) (71m) for each of the burst signals, a demodulator (74) for demodulating a received signal of a selected antenna, a deinterleave portion (75) for deinterleaving a demodulated signal over a plurality of burst signals, and a decoding means (76) for generating an output signal for estimating transmission information by synthesizing signals dispersed into a plurality of symbols.

Claims

1. A radio transmitter for intermittently transmitting an encoded information signal in a form of a burst signal comprising:

an encoder for generating an encoded bit signal by encoding bit data of transmission information;

interleave means for interleaving an output signal from said encoder over a plurality of burst signals;

a modulator for modulating an output signal from said interleave means;

a plurality of antennas; and

switch means for sequentially selectively supplying an output signal of said modulator to said plurality of antennas for each of said plurality of burst signals.

2. The radio transmitter as claimed in claim 1, wherein said encoder is a convolutional code encoder.

3. A radio receiver for receiving a signal transmitted from a transmitter including an encoder for generating an encoded bit signal by encoding bit data of transmission information, interleave means for interleaving an output signal from said encoder over a plurality of burst signals, a modulator for modulating an output signal from said interleave means, and switch means for sequentially selectively supplying an output signal from said modulator to a plurality of antennas for each of said plurality of burst signals, comprising:

a plurality of antennas;

switch means for sequentially selecting reception signals received at said plurality of antennas for each of said plurality of burst signals;

a demodulator for demodulating an output signal of said switch means;

deinterleave means for deinterleaving an output signal of said demodulator over said plurality of burst signals; and

decoding means for generating an output signal for estimating said transmission information by decoding the encoded bit signal in each of said plurality of burst signals deinterleaved by said deinterleave means.

4. The radio receiver as claimed in claim 3, wherein said encoder is a convolutional code encoder, and said decoding means is a Viterbi decoder.

5. A radio transmission method for intermittently transmitting an encoded information signal in a form of a burst signal, comprising the steps of:

generating an encoded bit signal by encoding bit data of transmission information;

interleaving said encoded bit signal over a plurality of burst signals;

modulating the interleaved signal from the interleaving step; and

transmitting the modulated signal from the modulating step by sequentially selectively supplying the modulated signal to a plurality of antennas for each of said plurality of burst signals.

6. The radio transmission method as claimed in claim 5, wherein the bit data of transmission information is encoded by convolutional coding.

7. A radio reception method for receiving a signal transmitted by a radio transmission method comprising the steps of generating an encoded bit signal by encoding bit data of transmission information, interleaving the encoded bit signal over a plurality of burst signals, modulating the interleaved signal, and transmitting a transmission signal by sequentially selectively supplying the modulated signal to a plurality of antennas for each of the plurality of burst signals, comprising the steps of:

sequentially selecting reception signals received at a plurality of antennas at every burst signal;

demodulating the selected signal from the selecting step;

deinterleaving the demodulated signal from the demodulating step over the plurality of burst signals; and

generating an output signal assuming transmission information by decoding the encoded bit signal in the plurality of burst signals.

8. The radio reception method according to claim 7, wherein the bit data of transmission information is encoded by convolutional coding, and the encoded bit signal is decoded by Viterbi decoding.

9. A radio transmission-reception method comprising the steps of:

generating an encoded bit signal by encoding bit data of transmission information;

interleaving said encoded bit signal over a plurality of burst signals to produce an interleaved signal;

modulating the interleaved signal to produce a modulated signal;

transmitting a transmission signal by sequentially selectively supplying the modulated signal to a plurality of antennas for each of said plurality of burst signals;

receiving the transmission signal at a plurality of antennas to produce reception signals;

sequentially selecting said reception signals received at said plurality of antennas for each of said plurality of burst signals to produce selected signals;

demodulating the selected signals;

deinterleaving the demodulated signal over said plurality of burst signals to produce deinterleaved burst signals; and

generating an output signal for estimating transmission information be decoding the encoded bit signal in the deinterleaved burst signals.

10. A radio transmitter-receiver comprising:

a plurality of antennas;

first switch means including a plurality of first terminals respectively connected to said plurality of antennas, second terminals connected to said first terminals upon transmission, and third terminals connected to said first terminals upon reception;

encoding means for generating an encoded bit signal by encoding bit data of transmission information;

interleave means for interleaving an output signal from said encoding means over a plurality of burst signals;

modulating means for receiving an output signal from said interleave means;

second switch means for sequentially selectively providing an output signal from said modulating means to said second terminals;

a plurality of demodulating means for respectively demodulating signals provided from said third terminals of said first switch means;

synthesizing means for selecting and outputting a best signal from output signals of said demodulating means;

deinterleave means for deinterleaving an output signal from said synthesizing means over said plurality of burst signals to produce deinterleaved burst signals; and

decoding means for generating an output signal for estimating transmission information by decoding the encoded bit signal of the deinterleaved burst signals.